My mom is giving me a choice: go to the auditions or go to camp...Which should I go with?

Personally, if it were me, I would chose the military one. You're doing a good thing for other people plus it's something you want to do. If you ever see yourself going into the armed forces (not sure what they're called in Canada) it would be a great thing to do. However, if you don't really want to make that your future, you should do the other one since that would get you a job.